merge r2980, r2981, r2982:

win32 fixes:

*) ngx_http_set_exten() is always successful since 0.3.46
*) skip URI trailing dots under Win32
*) use caseless regex locations on caseless filesystems: MacOSX, Win32, Cygwin

src/http/ngx_http_core_module.c

@@ -1220,10 +1220,7 @@ ngx_http_core_try_files_phase(ngx_http_request_t *r,
             ngx_memcpy(p, name, path.len);
         }
 
-        if (ngx_http_set_exten(r) != NGX_OK) {
-            ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
-            return NGX_OK;
-        }
+        ngx_http_set_exten(r);
 
         ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
                        "try file uri: \"%V\"", &r->uri);
@@ -1633,7 +1630,7 @@ ngx_http_set_content_type(ngx_http_request_t *r)
 }
 
 
-ngx_int_t
+void
 ngx_http_set_exten(ngx_http_request_t *r)
 {
     ngx_int_t  i;
@@ -1647,14 +1644,14 @@ ngx_http_set_exten(ngx_http_request_t *r)
             r->exten.len = r->uri.len - i - 1;
             r->exten.data = &r->uri.data[i + 1];
 
-            break;
+            return;
 
         } else if (r->uri.data[i] == '/') {
-            break;
+            return;
         }
     }
 
-    return NGX_OK;
+    return;
 }
 
 
@@ -2079,9 +2076,7 @@ ngx_http_subrequest(ngx_http_request_t *r,
     sr->method_name = ngx_http_core_get_method;
     sr->http_protocol = r->http_protocol;
 
-    if (ngx_http_set_exten(sr) != NGX_OK) {
-        return NGX_ERROR;
-    }
+    ngx_http_set_exten(sr);
 
     sr->main = r->main;
     sr->parent = r;
@@ -2160,10 +2155,7 @@ ngx_http_internal_redirect(ngx_http_request_t *r,
     ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
                    "internal redirect: \"%V?%V\"", uri, &r->args);
 
-    if (ngx_http_set_exten(r) != NGX_OK) {
-        ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
-        return NGX_DONE;
-    }
+    ngx_http_set_exten(r);
 
     /* clear the modules contexts */
     ngx_memzero(r->ctx, sizeof(void *) * ngx_http_max_module);
@@ -2566,6 +2558,10 @@ ngx_http_core_regex_location(ngx_conf_t *cf, ngx_http_core_loc_conf_t *clcf,
     err.len = NGX_MAX_CONF_ERRSTR;
     err.data = errstr;
 
+#if (NGX_HAVE_CASELESS_FILESYSTEM)
+    caseless = 1;
+#endif
+
     clcf->regex = ngx_regex_compile(regex, caseless ? NGX_REGEX_CASELESS: 0,
                                     cf->pool, &err);
 

src/http/ngx_http_core_module.h

@@ -437,7 +437,7 @@ ngx_int_t ngx_http_core_content_phase(ngx_http_request_t *r,
 
 void *ngx_http_test_content_type(ngx_http_request_t *r, ngx_hash_t *types_hash);
 ngx_int_t ngx_http_set_content_type(ngx_http_request_t *r);
-ngx_int_t ngx_http_set_exten(ngx_http_request_t *r);
+void ngx_http_set_exten(ngx_http_request_t *r);
 u_char *ngx_http_map_uri_to_path(ngx_http_request_t *r, ngx_str_t *name,
     size_t *root_length, size_t reserved);
 ngx_int_t ngx_http_auth_basic_user(ngx_http_request_t *r);

src/http/ngx_http_request.c

@@ -763,6 +763,22 @@ ngx_http_process_request_line(ngx_event_t *rev)
                 r->args.data = r->args_start;
             }
 
+#if (NGX_WIN32)
+            {
+            u_char  *p;
+
+            p = r->uri.data + r->uri.len - 1;
+
+            if (*p == '.') {
+
+                while (--p > r->uri.data && *p == '.') { /* void */ }
+
+                r->uri.len = p + 1 - r->uri.data;
+
+                ngx_http_set_exten(r);
+            }
+            }
+#endif
 
             ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
                            "http request line: \"%V\"", &r->request_line);

src/http/ngx_http_script.c

@@ -1074,11 +1074,7 @@ ngx_http_script_regex_end_code(ngx_http_script_engine_t *e)
             return;
         }
 
-        if (ngx_http_set_exten(r) != NGX_OK) {
-            e->ip = ngx_http_script_exit;
-            e->status = NGX_HTTP_INTERNAL_SERVER_ERROR;
-            return;
-        }
+        ngx_http_set_exten(r);
     }
 
     e->ip += sizeof(ngx_http_script_regex_end_code_t);

src/os/win32/ngx_files.h

@@ -149,6 +149,7 @@ ngx_int_t ngx_file_info(u_char *filename, ngx_file_info_t *fi);
                                | (fi)->ftLastWriteTime.dwLowDateTime)        \
                                           - 116444736000000000) / 10000000)
 
+#define NGX_HAVE_CASELESS_FILESYSTEM  1
 
 #define ngx_filename_cmp(s1, s2, n) _strnicmp((char *) s1, (char *) s2, n)